samba3upgrade clarification on groups

Andrew Bartlett abartlet at
Fri May 25 23:43:29 MDT 2012

On Fri, 2012-05-25 at 14:39 -0400, Charles Tryon wrote:
> OK, this is turning out to be more complicated than I thought.  I must be
> missing something obvious here....
> I have a wrapper script that I use for my migration test, since it has all
> the arguments I use for the script, and it does some extra cleanup steps
> after the end of the samba-tool part of the process.
> As a part of this wrapper, I am copying the /etc/passwd and /etc/group
> files that I grabbed off of the S3 server, into the /etc directory on the
> new server.  This is a little tricky because the local users and groups on
> the new host are not the same as those on the original host.  So, I "cheat"
> a bit and save copies of the original passwd and group file before I copy
> the S3 versions, and then move them back again when I'm done.  Other than
> some minor warnings about a couple of skipped users ("nobody"=501 and a
> domain trust account), and the usual complaints about not finding the wins
> and idmap tdb databases, the script finishes without any problem.
> However, when I'm done, none of my groups have been imported.
> What am I missing here?  Could this be a problem with not having idmap
> database from the original (3.0) server?

Yes, that may well be the issue.  We can only import groups that are
mapped in the group_mapping.tdb (as we need something to enumerate to
discover them).

Andrew Bartlett
Andrew Bartlett                      
Authentication Developer, Samba Team 

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